![1girl bangs bare_shoulders blunt_bangs breasts carmilla_(fate/grand_order) chain cleavage crossed_legs curly_hair fate/grand_order fate_(series) fuli_dun headgear highres holding jewelry large_breasts long_hair looking_at_viewer open_mouth scepter simple_background sitting solo staff supportasse white_hair yellow_eyes rating:s score:18 1girl bangs bare_shoulders blunt_bangs breasts carmilla_(fate/grand_order) chain cleavage crossed_legs curly_hair fate/grand_order fate_(series) fuli_dun headgear highres holding jewelry large_breasts long_hair looking_at_viewer open_mouth scepter simple_background sitting solo staff supportasse white_hair yellow_eyes](/cdn_image/preview/83/9d/839d9a5265f5d749f2bf14ca314c2708.jpg)
supportasse
From Wikipedia:
A supportasse (or underpropper) is a stiffened support for a ruff or collar. Essential items of courtly fashion in the late 16th and early 17th centuries, supportasses are sometimes called piccadills (picadils, pickadills), whisks, or rebatos, terms used at different times for both the supporters and the various lace or linen collar styles to which they were attached.
Not to be confused with ass support.